659649479 has 2 divisors, whose sum is σ = 659649480. Its totient is φ = 659649478.

The previous prime is 659649449. The next prime is 659649481. The reversal of 659649479 is 974946956.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 659649479 - 2²⁰ = 658600903 is a prime.

Together with 659649481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659649409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329824739 + 329824740.

It is an arithmetic number, because the mean of its divisors is an integer number (329824740).

Almost surely, 2^659649479 is an apocalyptic number.

659649479 is a deficient number, since it is larger than the sum of its proper divisors (1).

659649479 is an equidigital number, since it uses as much as digits as its factorization.

659649479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 59.

The square root of 659649479 is about 25683.6422456006. The cubic root of 659649479 is about 870.5046083975.

The spelling of 659649479 in words is "six hundred fifty-nine million, six hundred forty-nine thousand, four hundred seventy-nine".